Click the create your DAO - Use Aragon Client button
Click the Create a DAO button
Click the Aragon Client Button
Re-connect the Web3 wallet (before that select the network and the account you want to use on the Web3 wallet)
Select the network and the account on your web3 wallet (aka metamask)
Proceed with the DAO creation
Note: if the issue persists try to use another browser. The suggested browsers are Brave, Chrome/Chromium, Firefox desktop web browsers. If you are using a mobile phone, try with a pc/ laptop.